Water-sealed trap.



I. e. SIMPSON.

WATER s EAIED TRAP. APPLICATION FILED MAY 22. 1913.

1,185,846. Patented June 6, 1.916.

UNITED STATE-s PATENT oEEIo JOHN G. SIMPSON, OP KNoxvILLE, TENNESSEE, `ASSIGNOE. To NANNY II. SIMPSON, OE'

KNOXVILLE,

TENNESSEE.

LATER-SEALED TRAP.

Application filed May 22,

To allwhom it may concem."A

' Be it known that I, JOHN G. SIMPSON, a citizen of the United States, `residing at Knoxville, in the coulity of Knox and State of Tennessee, have invented certain new and useful Im rovements in Water-Sealed Traps, of whic the following is a specification.

This invention relates to water-sealed traps, and while capable of general applil` cation, is particularly designed to provide an improved bath trap to beincluded'in the waste pipe connections with a bath tub.

, In order that accumulations' of Waste matter may be conveniently removed from a bath trap, it isrequired that such traps be provided with removable covers which can be conveniently applied and removed.

' It is furthermore'desirable that Such traps be Substantially flush with the upper Isurface of the ioor so as to avoid undesirable obstructions? Considerable diiiculty is experienced,

when setting abath trap, in placing the' trap so that its cover will be substantially flush Awith the upper surface of the ioor, and in this connection it is an important object of the 'present invention to provide for the convenient cutting OE of so much of the' lupper portion off the trap as may project above the floor aftenthe trap has been Set in place and connected" with the waste pipe.

It is a further object of the invention to provide for the convenient fitting of the cover to the top of the trap at whatever point it may be cutoff, and also to insure a gas-tight connection between the cover,l and the trap.

The present improvements do not in any manner whatsoever impair the ordinary or required functions of the trap, nor .do they require anychanges in the manner of connecting the -trap withthewaste pipe, and therefore it isan'othcr important object of the present invention to so construct the device as to enable the fitting of the trap to the waste pipe according to present universal practice.

With these and other objects in view, the present invention consists in the combination and arrangemenf'of vparts as Will be hereinaftermore fully described, shown in Specivcaton of Letters Patent.

1913. serial No. 769,246.

the accompanying drawing 'and particu- Patented June c, 191e.

may be made, within the scope of the claims, f

without departing from thel spirit or'fsacrificing any of they advantages of the in` ventlon.

In the drawing, there has been illustrated a vertical sectional view of a water-sealed trap embodying the features of .the present invention, wherein 1 designates the body of the trap, which is in the usual form of a cylindrical casing having an inlet nipple 2 and an outlet nipple 3.

Above the inlet 2, there is -provided a Series of internal annular flanges 4, spaced a suitabledistanc'e apart, for a purplose as willbe hereinafter 'more fully described, and screwfthreaded, as at 5, -on their internal peripheries. Between adjacent anges, the body of the .trap ,is weakened, 'for instance, by means of an internal annular groove 6 and an external annular groove 7, said grooves-extending entirely around the body'of the trap and lying .sub-

stantially in the same plane with the upper Surface of the adjacent flange 4. While in ternal and external grooves have been illustrated, it is, of course, apparent that a slngle groove might y,be employed, either externally or internally, as maybe desired, as

v the object of the grooves is to reduce the thickness of the annular wall'of the trap body or casing so as to .facilitate the cutting OH of the `trap body at the weakened point by the use of a y.chisel or other suitable implement: r

. The top of the trap is open and provided with. an internal annular flange 8 having the same internal diameter as each of, the

4vianges 4, and likewise internally threaded. The removable top or cover 9 of the trap is a flat disk, provided with a pair of spanner the flange 8 and the cover so as to insure a gas-tight fit of the latter when it has been screwed down snugly upon the top of, the

- cap.

lnpractice, the-trap is fitted/in place in the usual way and is suitably connected to the waste pipe sections 13 and 14, with the upper pogjsion of the trap projecting through an opening in the floor '15. After theetrap has been connected with the waste pipe sections, it may be found that 'the l upper portion of the trap projects above the Hoor, in which event the projecting portion is 'out olf at thatawerakened portion which is adjacent the upper' surface of the floor, thereby exposing one of the anges 4, to

which the cover 9 may be convenientlyv screwed. ltwill here be noted that each Sealed trap, and at the same time permits of the trap being conveniently set in place with its top or cover Hush with the upper surface of the oor through which access must be had to the trap. lt will/ be further noted that this invention preserves the threaded connection between the cover and the trap, in accordance with universal sanitary requirements.`

By preference, the external diameter of thegasket, when not compressed, is substantially that of the interior of the body of the trap, and the internal diameter of the gasket is substantially the same as that of the respective flanges 8 and 47 so that when fitted in place, the gasket rests upon a flange without overlapping the upright wall of the body of the trap, and consequently the gasket will form a tight joint between the cover 9J and a flange, even though the upright wall vof the body' of the trap is not cut o exactly flush with the upper surface of the ange.

ile the present disclosure illustrates and describes the invention as embodied in a water-sealed trap, it will, of course, be understood that it is of more general-application, in that it may be used upon any u casing or conduit where it is desired to cut 0H the end of the casing or conduit so as to have the same come substantially flush with .a floor, wall or the like.

Having thus described the invention, what is claimed is f 1. A device of the class described comprising a casing having an open top and a lateral inlet below the top of the casing, and a cover having a detachable connection with the casing, one of the elements of the detachable connection being upon the bottom of the cover and the other element of the connection being upon the interior of the casing,

said casing having a series of connection elements located above the lateral inlet each of said elements being adapted to serve as a washer bearing when forming the uppermost connection, and said casing being weakened between successive connections to permit cutting ol of the casing.

2. A device of the class described comprising a casing open at its top andprovided with a lateral inlet below its open top, there. being a series of internal annular anges on the casing and above the lateral inlet each of said'iianges being adapted to serve as a washer bearing when in uppermost position, said casing having annular weakened lines in substantially the planes of the upper faces of the anges, and a removable cover having a depending connecting element for coperation with the uppermost liange. A

3. A trap casing having a series of internal annular lianges spaced apart to permit of the casing being cut on" between adjacent flanges, said flanges being of the same internal diameter and internally screw threaded, and a removable cover having a depending cylindrical flange externally threaded tol lit the internally threaded part of the uppermost Hange of the casing.

4. A casing having a series of., internal annular flanges spaced apart to permit of the casing being cut oll-l between adjacent Bauges, said lianges being of the same v internal y'diameter and internally screw threaded, a

removable cover having a depending cylindrical ange externally.threaded to fit the internally threaded part of the uppermost flange of the casing, and a gasket to fit between the cover and the uppermost flange andhaving substantially the same internal' diameter --as that of the flanges and an ex- 'ternal diameter substantially the same as the internal diameter casing.

5. A device of the class described comprising a trap casinghaving an opentop, a cover for said casing, a plurality of vertically spaced connecting means on the interior and at the upper part of said casing, connecting means on said cover for direct cooperation with the uppermost of the connecting means on the casing, the upper part of said casing of the body of the being removable at desired points whereby.

a selected connecting means on the casing is brought into position for cooperation with the connecting means on said cover.

V6. A` device of the class described comprising a trap casing having an open top, a cover for said casing, a plurality of vertically spaced connecting means on the interior and at the lupper part of said casing, connecting means on said cover for direct cooperation with the uppermost of the connectin means In testimony whereof I ax my signature gn the casilng, tle uppe1 part of sai casing in presence of two witnesses,

eing wea ene at eac connecting means whereby it may be removed to bring a Se- JOHN G SIMPSON' lected connecting means into position for co- Witnesses: operation with the connecting means on said J. C. RoMINEs, cover. WILL WRIGHT. 

